thumb|right|200px|Cropped version of the original batch-processed image (#035A72) of the "Face on Mars" Apophenia () is the tendency to perceive meaningful connections between unrelated things. The
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8551bf8fc6555dbd0e69edbe3dce86279c2b8624aacf6030e7e4ca8c4eaaaa31. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ed6e9ec4-5655-42d8-80b2-aed4e53db845.json and https://artists.proofprofile.net/proofs/artist/ed6e9ec4-5655-42d8-80b2-aed4e53db845.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).